Attachment for miter-boxes.



No. 673,785. Patented May 7, I908.

W. POTTER.

ATTACHMENT FOR MITER BOXES.

(Applicltioxi filed July 28, 1900.1

(No Model.)

A TTORNE XS FFICE.

ATENT TVILLIAM POTTER, OF NEW YORK, N. Y.

ATTACHMENT FOR MlTER-BOXES.

SPECIFICATION forming part of Letters Patent No. 673,785, dated May '7, 1901.

Application filed July 28, 1900.

To all whom it may concern.-

Be it known that LWILLIAM POTTER, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Attachment for Miter-Boxes, of which the followingis a full, clear, and exact description.

One purpose of this invention is to provide a simple tool adapted to guide and fix the angle of a saw when miters are to be cut, which tool will be light, yet strong, and of such size that it may be conveniently carried in an ordinary tool chest or tray.

Another purpose of the invention is to so construct the tool that a perfect miter-box may be obtained by attaching the tool to the upright sections of two boards secured at right angles to each other, the tool spanning a cut in the said upright section of the box, and also to provide a simple means whereby the guides for the saw can be locked at any angle to a perpendicular line, thus permitting the tool to be used to accurately cut miters of different degrees of inclination.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims. 7

Reference is to be hadto the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a perspective View of the improved tool attached to a miter-box. Fig. 2 is a side elevation of the same. Fig, 3 is a plan view of the tool and that portion of the box to which the tool is applied, and Fig. 4 is a front elevation of the saw carrier or guide.

The body of the tool consists of a skeleton frame A, said frame being usually arched, as shown, and said frame is provided with feet 10 and with flanges 11, which extend from the outer side edges of the feet, the front or inner faces of the flanges 11 and the under faces of the feet 10 of the frame being at right angles to each other. The frame is completed by the addition of a post or an upright 12, located at the upper central portion of the frame and offset to the rear. At the upper end of the post a horizontal arm 13 is carried forward,

its forward terminal being bifurcated, and a $erial No. 26,112. \No modem shorter arm 1.4 is forwardly projected from the frame A. This arm is also bifurcated at its forward terminal. The two arms 13 and 14 at their forward port-ions are in vertical alinement.

A loop-clamp B is employed in connection with the upright 12, and the said upright passes through the body portion of the loopclamp, as is best shown in Fig. 1. The loopclamp is provided at its rear with a set-screw 15, adapted for binding engagement with the back portion of the upright 12, as is shown in Figs. 1, 2, and 3, and where this set-screw engages with the upright an indentation or groove 15 is produced, as is particularly shown in Fig. 3. At the forward portion of the body of the loop-clamp B a horizontallylocated segment 16 is provided, forming a portion of the said clamp. This segment has a front marginal flange 17, and in this flange a series of notches or recesses 18 are produced. In the series a central recess is included and recesses at intervals at each side of the central recess, as is shown in Figs. 1 and 3.

In con nection with the frame A, the upright 12, and the loop-clamp B a saw carriage or guide 0 is employed. This saw carriage or guide consists, preferably, of an upper perpendicular section 19, circular in cross-section and made tubular in the interest of lightness, and a lower section 20, whose side faces are semicircular, together with an intermediate section 20, connecting the upper and lower sections 19 and 20, so that the lower section of the carriage or guide is in advance of the upper section, as is particularly shown in Figs. 1 and 2. The upper section 19 of the saw carriage or guide is provided with vertical grooves 21 in opposite side faces, and the lower section 20 of the said saw carriage or guide 0 is provided with a longitudinal slot 22, which extends the full length of the lower section 20, dividing it practically into two parts, and this slot is likewise carried to a greater or a less extent into the intermediate section 20. The lower portion of the slot 22 is quite wide, while the upper portion is more or less reduced in width, as is shown in Fig. 4.

Blocks 23 are located at the lower portions of the lower members of the saw carriage or guide 0, and these blocks extend forward and rearward beyond the said members, as shown in Figs. 1 and 2, and are applied to the inner faces of the lower members of the saw carriage or guide, constituting jaws through which the blades of saws are to be passed. The blocks 23, which are practically guide? blocks as well as jaws, may be attached to the lower members of the saw carriage or guide 0 in any approved manner. In the drawings the said lower members of the saw carriage or guide 0 are widened, forming foot-sections 23, and in the inner faces of these foot-sections horizontal grooves are produced, into which the guide-blocks or jaws are entered and secured as desired. The upper portion 19 of the saw carriage or guide 0 enters and turns in the space between the members of the bifurcated ends of the framearms 13 and i4, and the said saw carriage or guide likewise-turns freely in the body portion of the loop-clamp B. This clamp serves to hold the saw carriage or guide in adjusted position, as by loosening the set-screw 15 in the loop-clamp B the saw-carriage may be moved up or down or may be turned to the right or to the left.

The saw carriage or guide C is held in desired position by means of a gage-arm D, which is usually provided with a ring-like body 24:, through which the upper portion 19 of the saw carriage or guide is passed, and the ring-like portion of the gage-arm D is provided with set-screws 25 at opposite sides, and these set-screws enter the grooves 21 in the upper portion of the saw carriage or guide, so that the gage-arm may be raised or lowered proportionately to the corresponding movement of the loop-clamp B, and after the gagearm D has been secured to the saw carriage or guide and the set-screw 15 in the loopclampv B is loosened the gage-arm may be carried to such a position that it may enter any one of the recesses 18 in the segmental extension 16 from the loop-clamp, and thus hold the jaws at right angles to a perpendicular line drawn through the center of the frame A or at any obtuse or acute angle upon which the miter is to be cut.

This device is applied to a miter-box E, which is of very simple construction, comprising but two boards 26 and 27, placed at right angles to each other and secured together, and in the upright board 26, preferably at a central point, a vertical slot 28 is made, and the side walls of this slot or opening are beveled in opposite directions to any required extent, since a wide opening is required at the rear of the slot or opening 28 to permit the saw when placed between the clamps or guides 23 to assume the required angle.

When the device is applied to the miterbox, itstraddles the opening 28 and the feet 10 rest upon the upper surface of the board 26, while the flanges 11, connected with the feet, engage with the rear faces of said board.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In an attachment for miter-boxes, the combination of a support, a saw-guide mounted to turn and slide in the support, a clamp for securing the guide in the support, a gagearm carried by and vertically adjustable on the saw-guide, and means for locking the gage-arm in position, substantially as described.

2. In an attachment for miter-boxes, the combination of a support provided with spaced seats, a saw-gu ide having its upper end resting in the seats of the support, aclamp carried by the support and holding the sawguide in said seats, and a gage-arm carried by the saw-guide and having a locking engagement with the clamp, substantially as described.

3. In an attachment for miter-boxes, the combination of a support provided with bifurcated arms, a saw-guide having its upper end resting between the members of the said arms, a clamp carried by the support and holding the saw-guide in engagement with said arms, said clamp having a notched portion, and a gage-arm vertically adjustable on the saw-guide and engaging the notched portion of the clamp, substantially as described.

4. In an attachment for miter-boxes, the combination of a support provided with horizontal arms having bifurcated ends, a yokeclamp having a notched segment and carried by the support, a saw-guide having longitudinal grooves in the opposite sides of its upper end, a gage-arm having a ring-like body receiving the saw-guide and engaging at its outer end the notched segment of the clamp, and set-screws in the ring-like body of the gage-arm and engaging the grooves of the saw-guide, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM POTTER.

Witnesses:

J. FRED. ACKER, EVERARD BOLTON MARSHALL. 

